The Senate of Iran (Persian: Kakh-e Majles-e Sena, کاخ مجلس سنا) was the upper house legislative chamber in Iran from 1949 to 1979. A bicameral legislature had been established in the 1906 Persian Constitutional Revolution but the Senate was not actually formed until after the Iran Constituent Assembly, 1949, as an expression of ShahMohammad Reza Pahlavi''s desire for more political power. The Senate was filled mainly with men who were supportive of the Shah''s aims, as intended by Pahlavi.

The Senate was disbanded after the Islamic Revolution in 1979, when the new constitution established a unicameral legislature. Currently, the former Senate building is used by the Assembly of Experts.